Container



June 16, 1942.

'J. B. CALVA vCONTAINER Filed Dec. 23, 193'? Sigg go g 3%' 31 Z2 0 15 zy31 3 )fi/3,012@ f6 J w wm E l l 10 56 Z7 j .54)I

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Patented `une 16, 1942 uNiTED STATE CONTAINER Jose B. Calva, St. Paul,Minn., asslgnor,4 by mesne assignments, to Waldorf Paper ProductsCompany, a corporation, of Minnesota Application December 23, 1937,Serial No. 181,304

1 Claim.

My invention relates to an improvement in containers wherein it isdesired to provide a container, the body portion of whichis formedpreferably of paper or Many types of containers formed for the purposeof holdi/ng liquids or greasy materials. Some of these containers havebeen successful in containing these materials for 'some length of time.It Ahas been difcult to store such materials in the containers for anygreat length without leakage of the cmaterial from the container orabsorption of the liquids by the body of the container..

It is a purpose of the present invention to provide a container which isconstructed in a man-A nerI to prevent both the leakage of the contentssimilar material, and which is designed to accommodate liquids,semisolids, oil, or similar material.

have previously been from the container and also to prevent absorpk ofplastic material.

made, the container is designed to maintain this 4 seal until thecontainer or seal is punctured, thus preventing refilling of thecontainer.

It is a purpose of my invention to provide a container which may be madeat a minimum of cost and `which is extremely light in weight.Accordingly, I desire to use paper or pulp products in the formation ofboth the side walls and the ends of the container wherever possible andto reinforce the container if necessary at the points of greateststrain. The seal may be formed oi' either metallic material or ofplastic or fibrous material in a manner which will be later lmoreclearly described.

It is a further purpose of my invention to pro- I vide a containerformed of either laminated sheets of paper or fibrous material or ofpulp products or plastic materials, which are lined with a suitableliner impervious to the mate- Figure l is a perspective view of mycontainer in preferred form.

Figure 2 isa cross-sectional view through an end of my containerillustrating the filling and sealing arrangement.

Figure 3' is a sectional view through one end of a slightly differentform of container'.

Figure 4 is a sectional view through an end of my container of slightlydifferent form, disclosing the end thereof which is equipped withfilling and sealing apparatus. l

Figure 5 discloses my container in 'which a slightly different form offilling and sealing device is provided. i,

My container A is formed with,.a side wall I0 which may be eithercylindrical or any other geometrical shape. This wall I0 may be of pulpmaterial molded into proper fqrm or may be formed of laminated sheets,one wound about the other. The side wall III may similarly be formed Onthe inner surface of the container A extending from end' to end of theside wall I0, I provide a liner II formed of a film of materialimpervious tothe material to be contained.

At theends of the container I. provide end walls formed of discs ofmaterial formed of laminations of paper, molded pulp, or of plasticmaterial. These end walls I2' are provided with a cylindrical flange I3of a diameter to flt tightly within the side wall I0, and the innersurface of the end walls I2 are provided with a liner I3 formed ofmaterial impervious tomoisture. This lining I3 preferably extends aboutthe flange I3 so that the two surfaces of -lining material I I and I2may contact about the entire periphery of the inside of the containerand may be adhered together by a suitable adhesive I4 between theselinings.

' flange I6 surrounding wall I0 and having an end I1 extending into thebody of the sidewall I0. The ring I5 is also prorial to be contained.This lining material is so arrangedA as to seal the contents of thematerial thoroughly and to prevent absorption of the contained materialb'y the body of the container.

These andother pbjects and novel features of my invention will be morefully and clearly set forth in the following specification and claim.

In the drawing forming a part of my specification:

vided with an end ends of the side wall I0 and the flange I3 on the endwall I2. An inner flange 20 extends within the flange I3 and if desireda short ring-,shaped flange 2l may 'overlie the top surface of the endwall I2. The reinforcing ring I5 thus holds the flange I3 closelyadjacent' the side wall III and prevents the separation of thesemembers. This ring I5 also reinforces the end of the container fromshock.

In Figure 2 of the portion I9 which covers the l drawing, I disclose areincular groove 26 extends into the end wall I2 to crimp the 'end walland to compressthe end wall at this point to prevent leakage about thesleeve 24. A ring 21 extends about the sleeve 24 spaced on the oppositeside of the end wall I2 therefrom. This ring 21 is provided with anintegral sleeve 29 fitting closely against the tapered wall 24 to form atight joint between these members 29 and 24. 'I'he ring 21 may also beformed with a circular groove 30 of a diameter approximately equal tothe diameter of the groove 26 so that when the seal is in place, the endwall I2 is pinched by the opposed rings formed by the grooves 26 and 30,to compress the end wall and to prevent leakage of the contents of thecontainer at this point.

In this construction it will be noted that at the juncture between theside wall and the end wall, the two lining members contact and areadhered together, and it will also b e noted that the seal compressesthe liquid, moisture, or grease-proof lining and directly contacts thesame, preventing leakage.

The outer end of the tapered sleeve 24 is flared outwardly at 3| and acap 32 is rolled or crimped about this flared end 3| when the seal 32 isin place. When the package has been filled, the seal 32 is applied andcrimped in a manner to prevent leakage at this point. If desired, agasket 33 may be provided within the cap or seal 32 to engage the flaredend 3I of the wall 24.

In Figure 3 of thedrawing, I disclose a container having a side wall 34having an inner lining and an outer lining 36 of grease-proof, oil andliquid-proof material. The end wall 31 is formed o'f a disc-shaped body39 having aperipheral flange 40 of a shape to flt within the side wall34. A lining 4I is provided extending over the inner surfaceof the body39 and the outer surfaceof the flange 40 so that the lining 35 and thelining 4I may be adhered by a suitable glue atv 42. An outer covering orcoating of grease, oil, and moisture-proof material indicated at 43 mayalso cover the outer surface of the body 39 of the end wall 31 and theinternal surface of the flange 40 If it is desired tofurther reinforcethe end wall 31, this may be done by means of suitable reinforcing discs44 overlying the body 39 and extending within the flanges 40. The endmay be further reinforced by means of a reinforcing ring 45 extendingwithin the flange 40, and the ring 45 may be secured to the flange 40and to the end `wall 44 by rivets, staples, or other suitable holdingmeans indicated at 41.

The end wall 31 is disclosed as including a filling plug 49 which issubstantially identical to the plug 23 illustrated in Figure 2. The cap50 used in combination with the filling plug 49 is shown crimpeddirectly to the flared end 5I of the plug 49 and no gasket is shown inthis construction. It is obvious that a gasket such as 33 may beprovided if desired or that the construction4 of Figure 2 may beequipped with a reinforcing ring such as 45.

Figure 4 of the drawing discloses a container end which is similar tothat disclosed in Figure 2, but does not disclose the reinforcing discsuch as 22 of Figure 2, or ythe filling device. In this form ofconstruction, the s ide wall 52 is provided with an inner lining 53formed of liquid and grease-proof material. The end wall 54 is alsolined with a grease-proof and liquid-proof lining 55 which extends overthe entire surface thereof and over the peripheral flange 56 of the endwall. 'I'he end may be adhered to the side wall, adhering the lining 534to the lining 55 by means of a suitable adhesive at 56. VA reinforcingring 51 is provided enclosing the extreme end of the side wall andflange 56. This reinforcing ring is similar to that disclosed inFigure`2 of the drawing.

. This reinforcing ring if desired may be substituted l 'I'he end wall62 is formed with 'wall of the plug 41 or opening 66.

for the end closing ring 59 illustrated in Figure 3 of the drawing;which is merely a ring of suitable material such as paper, pulp board,or plastic material adhered to the end of the container. This ring 59which may be treated to water-proof the same, closes the ends of thesidewall 34 and fiange 40 as well as the reinforcing ring 45. The ring59, when properly adhered in place by suitable glue prevents theabsorption of any of the contents by the body of the container, the endWall or reinforcing ring.

In Figure 5 of the drawing, I disclose a slightly different form ofcontainer seal. In this form of construction the side wall 60 isprovided with a suitable liquid, oil, or grease-proof lining 6I.

63 having a peripheral flange 64 extending about the same. A lining ofliquid and grease-proof material indicated at 65 extends over the innersurface of the end wall 62 and flange 64 and may be secured in place byadhering the lining 65 directly to the lining 6I. A central aperture isprovided in the end Wall 62 which is preferably tapered as indicated at66.A The container is sealed by means of a disc 61 which extends withinthe fiange 64 and which is provided with an integral plug 69 extendinginto the opening 66. The plug A69 is preferably tapered as illus--ltrated to fit the taper of the opening 66. The surface of the disc 61and plug 69 is covered with a coating or lining impervious to liquid,oily and greasy material indicated at 10. When ths contents of thecontainer of this form are Within "the container, the same may be sealedby means of a suitable adhesive applied to the surface of the lining 10or the end wall 62, or both of these members, as well as about thetapered When the end plug 61 is'in place, the joint between this endplug and the end wall 62 is therefore sealed by this adhesive,preventing leakage about the central plug 69.

The closure plug 69 and integral disc 61 may be formed of laminatedmaterial, fibrous, or plastic material formed in the proper shape, andwhen in position will reinforce the end wall 62' ofthe container.

In accordance-with the patent statutes, I have a disc-like body l acontinuous unbrokeniiner covering the entire 10 inner surface of saidsealing means, said end wall having' an aperture therein into which saidplug ,extends, said plug projecting through said aperture, a moistureimpervious lm on said bearing portion /and extending over said plug, andadhesive means interposed between said liner over said bearing portionand said end wall and between said plug and said aperture.

JOSE B. CALVA.

